Crushing concave and mantle



Sept'. 8, 192.5.

` 4 E. B; sYMoNs CRUSHING coNcAvE AND MANTLE mwQw Patented Sept. 8, 1925.

UNITE-nI STATES 1,552,458 PATENT orlflcn` EDGAR B. SYMONS, 0]?` LOS ANGELES, CALIFORNIA, ASSIGNOR TO' SAYMON S BROTHERS` COMPANY, OF MILWAKEE, WISCONSIN, A. CORPORATION OF SOUTH DAKOTA.

CRUSHING concave AND MANTLE.

Application led January 24, 1925. Serial No. 4,376.

To all whom-t may concern:

Be it known-that I, EDGAR'B. SYMoNs, a citizen vof the United States, residing at Los Angeles, in the county of Los Angeles f and State of California, have invented a certain new ,and useful Improvement in Crushing Concaves and Mantles, of which the following is a specification.

My invention relates to improvements in gyratory cone crushing machines` and relates particularly to the removable mantle which provides the crushingsurface for the first concave. One object is to provide means for the easily secured attachment of the removable mantle to the concave. Another object is the provision of such securing `means which shall be positioned outside of the crushing zone. Another object is the provision of a sectional mantle in which the rapidly wearing portions may be replaced more frequently than the rest of the mantle. Other objects will appear from time to time in the course of the specification and claims.

My invention is illustrated more .or less diagrammatically in the accompanying drawing which is a vertical section taken through the vaxis ofthe Crusher. Like parts are indicated by like characters throughout.

A is the crusher frame the details of which form no part of the present invention. It may have a cylindrical bearing surface A1 in which is mounted a cylindrical portion B1 of the spider B-' BZ are outwardly projecting lugs apertured as at B3 to receive the supporting screws B4. B5 B6 are adjusting and supportingnuts.

C is the concave proper which overhangs any suitable cone C1.

D D1 and D2 are removable `mantle sections in the form of tapered or conic rings. The upper ring D has a cylindrical portion D3 and is downwardly and inwardly inclined as at D4.l The lower ringD2 is provided with outwardly projecting lugs or ears D5 which seat in the apertures D6 in the spider whereby rotation of the ring is prevented. D7 are holding bolts passing Yupwardly through said lugs and secured by the bolts D8.

It will be realized that whereas I have described and shown an operative device that nevertheless many changes .might be made in the size, shape, number and disposition of parts without departing from the spirit 'of my invention and that I wish my descrlption and drawings to be taken asl in a broad sense diagrammatical, rather thanas limiting me' to the specific structure shown.

The use and operation of my invention are as follows: i v

In cone Crushers of the .type herein illustrated-the wear of the `crushing contact is so steady and so severe that it is necessary to provide removable crushing members. Vithqthe concave herein shown, Ivemploy a multiple section mantle, each mantle being avconic ring. The upper section is centered by, means of a cylindrical upper edge, and the top of the cylindrical portionis downwardly and inwardly inclined in continu- .ation of the downwardly and inwardly inclined upper surface of the concave, the two together serving as a directing chute t0 direct the material which falls thereupon downwardly toward the top of the cone. The lowest section of the mantle serves 'as the securing section to hold all rthe sections above it in place. It is, therefore, provided with .outwardly projecting lugs rthrough which pass bolts whereby it is positively locked to the spider. These ylugs set in notches about the bottom of they spider. Thus any rotation of the concave ispolsitively prevented, and all shearing strain upon the supporting bolts is prevented.

The mantle may be made in one piece, if desired, but I'prefer to make it in two or more sections, since under most conditions the wear is heaviest about the bottom of the mantle, and it is desirable tobe able to replace the lowest section, when 1t wears down,

side the crushing area and holding bolts engaglng saidlugs `and adapted to draw them upwardly toward the support against which the mantle is seated.

2. In a gyratory Crusher, a concave forming a downwardly and outwardly flared hopper, a mantle therefor, having outwardly projecting lugs at the bottom thereofv and holding bolts aflaptedto suspend the mantle by means of said lugs.

3. A lini'r gv for gyratory concaves comprising an outwardly and downwardly flared mantle of generally uniform thickness havinglat the top a cylindrical extension substantially parallel with the axis of the machine and at the bottom a series of spaced outwardly projecting holding lugs removed from the crushing area.

4. A removable lining for gyrato-ry'concaves, comprising a downwardly and out@ wardly flared mantle, and -means adjacent the bottom thereof for securing said mantle to the concave, comprising spaced lugs, integral with the mantle, and outwardly projectin therelirom.

wardly flared mantle 'of generally uniform thickness, and meansl adjacent the bottom .thereof for securing said mantleto the concave, comprising a series of spaced outwardlyprojecting integral holding lugs about the bottom of,the mantle and removed from the crushing area. v V

6. A removable-lining for gyratory concaves comprising a downwardly and outwardly llared mantle, the upper portion of said mantle being cylindri'cally formed andv substantially'parallel with the vertical axis of the machine, and means adjacent 'the foutwardly flared bottom of the mantle `for Securing said mantle to the concave.

7.,` A removable lining'for gyratory concaves comprising .a downwardly and' outwardly flared mantle, the upper portion of said mantle being cylindrically formed and Substantially arallel with the vertical axis ofthe machine, and means' adjacent the outwardly flared bottom of thel` mantle for securing said mantle to the concave, the

, I l removable lining for gyratory con,-v caves, compnsmg `a downwardly and outupper vsurface of said cylindrical. portion being downwardly and inwardly inclined.4

8. A removable lining-for lgyratory concaves comprising a downwardly and outwardly flared mantle, the upper portion of said mantle being cylindricallyl formed and substantially parallel with the vertical axis of the machine, and means adjacent the outwardlyflared bottom` of the mantle for securing saidn'iantleto the concave, the crushing surface along the lower portion of `the mantlebeing-outwardly inclined-in relation to th'e rest .of the mantle.

9;*A mantle for usewith the concave of from thel-owest of said rings, the concave being provided with apertures to receive said lugs and to limit their lateral movement,

said lugs and to prevent downward movemen't of said rings. v

11. A mantle foruse with the concave of ya gyratory crusher, comprisingl a pluralityof downwardly andl outwardly flared conic rings and a plurality pf lugs about the lowest of said rings, outwardly projecting there- 'from and spacedl about its periphery.

ofeles, count` of Los- Signed at Los Ang Angeles and State of California, t is 15 day of January, 1925. A

` EDGAR B. sYMoNs.

"and securing means adapted'to pass through 

